Finding the Fourth Proportional to 1,019.60, 1,527.72 and 634.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,019.60 : 1,527.72 = 634.04 : x
2. Step 2: Convert to fraction form
   1,019.60/1,527.72 = 634.04/x
3. Step 3: Cross multiply
   1,019.60x = 1,527.72 × 634.04
4. Step 4: Simplify right side
   1,019.60x = 968,635.59
5. Step 5: Solve for x
   x = 968,635.59/1,019.60
6. Step 6: Final answer
   x = 950.02